GB2011095A - Method of temperature measurement - Google Patents

Method of temperature measurement

Info

Publication number
GB2011095A
GB2011095A GB7848664A GB7848664A GB2011095A GB 2011095 A GB2011095 A GB 2011095A GB 7848664 A GB7848664 A GB 7848664A GB 7848664 A GB7848664 A GB 7848664A GB 2011095 A GB2011095 A GB 2011095A
Authority
GB
United Kingdom
Prior art keywords
resistor
ntc
capacitance
voltage
charging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB7848664A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux AB
Original Assignee
Electrolux AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrolux AB filed Critical Electrolux AB
Publication of GB2011095A publication Critical patent/GB2011095A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
    • G01K7/25—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

A method of measuring temperature, in for example an electric cooking apparatus, uses the temperature dependent characteristic of an NTC-resistor or thermistor (10) and includes the steps of charging a capacitance (12) (in a circuit which includes the NTC-resistor (10)) to a first voltage; then discharging the capacitance (12) by way of a first resistor (11) until the voltage in the capacitance (12) has reached a second voltage; and determining the temperature directly from the ratio between the times of charging and discharging. The first resistor (11) is connected in series with the NTC-resistor and the capacitance (12) and the charging current of the latter is determined by the sum of the values of the first and NTC-resistors (11, 10). <IMAGE>
GB7848664A 1977-12-22 1978-12-15 Method of temperature measurement Withdrawn GB2011095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7714645A SE7714645L (en) 1977-12-22 1977-12-22 SET TO META TEMPERATURE

Publications (1)

Publication Number Publication Date
GB2011095A true GB2011095A (en) 1979-07-04

Family

ID=20333294

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7848664A Withdrawn GB2011095A (en) 1977-12-22 1978-12-15 Method of temperature measurement

Country Status (4)

Country Link
DE (1) DE2855084A1 (en)
FR (1) FR2412830A1 (en)
GB (1) GB2011095A (en)
SE (1) SE7714645L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3032091C2 (en) * 1980-08-26 1986-09-04 Elster AG, Meß- und Regeltechnik, 6700 Ludwigshafen Device for electrical heat measurement
DE3830457A1 (en) * 1988-09-08 1990-03-15 Telefunken Electronic Gmbh TEMPERATURE SENSOR

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620082A (en) * 1970-03-13 1971-11-16 Us Air Force Digital thermometer
JPS5648835B2 (en) * 1972-11-15 1981-11-18

Also Published As

Publication number Publication date
SE7714645L (en) 1979-06-23
DE2855084A1 (en) 1979-07-05
FR2412830A1 (en) 1979-07-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)